Experimental Details

Materials Unprocessed, dried, raw nuts with their shells intact (Almond, Filbert/Hazelnut, Pecan, Walnut) were procured directly from YuPik, Montreal, QC, Canada. The nuts were originally grown in the USA. Ethanol (C₂H₆O), Acetone (C₃H₆O), Sodium hydroxide (NaOH), Potassium Hydroxide (KOH), Hydrochloric Acid (HCl), Sulfuric Acid (H2SO4), and Nitric Acid (HNO3) were obtained from Fisher Scientific.